Driven plate for friction clutches



June 19, 1928.

, H. V. REED DRIVEN PLATE FOR FRICTION CLUTCHES v Filed May 25, 1927 Patented -inne i9, 1192. u) I UNITED. STATES PATENT oFFica.

HAROLD V. REED, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE BORG & BECK COMPANY,

OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

nRI'vENg PLATE Fon Application led May 26,

This invention relates to friction clutches of the kind wherein a friction plate driven member is interposed between two parts of a driving member and is adapted tobe gripped or clamped by the parts under suflicient pressu're to impart motion from the driving member t o a driven member.

The object of the invention is provide a driven plate of novel construction which will absorb the noises due to periodic vibrations of the engine and prevent them from being carried forward through the clutch to parts of the assembly where they will become audible and objectionable. t

A further object of the invention is to provide a novel driven plate of simple andv light but substantial construction and coniprisiiig a. star shaped hub. member and a` friction member shaped to receive the hub member, with cushion strips suitably disposed at the point-s of the hub. member where the driving force of the friction member is applied to the hub member, to absorb the noises which otherwise might travel from the friction member to the hub member, and to confine the lcushion strips in a manner to prevent their deterioration and to maintain their efficiency.

In the accompanying drawings illustrating a selected embodiment of the invention:

Fig. 1 is an elevation of the driven plate, patly broken away and partly in section, an

Fig. 2 is a sectional lview on the line -2-2 of Fig. 1. f

Referring to the drawings the driven plate comprises a friction member which `is mounted upon a centrally disposed hub member with a compressible discontinuous cush ion interposed between said members so that l movement ofthe friction member iscom municated through the cushion, and by compression only thereof, to the hub. member. rThe hub member comprises a hub 3 having a star shaped flange 4 with a plurality vof points 5. The friction member comprises a :dat plate ring 6 which is mounted 'on the hub against one side of the star shaped flange 4. Friction rings 7, 7 of suitable ma terial are fastened to opposite sides of the plate at its periphery. A casing 8 has a star shaped cavity 9 therein and an edge Harige 10 to receive the rivets 13 or other suitable fastening means by which the casing is fastened 'to the side of the plate ring 6. The

FRICTION cLU'rcnns.

1927. serial No. 194,314.

of the star shaped hub member is enlarged u at 14; to provide shoulders 15 which form the ends of the cushion chambers and against which the ends of the cushion stripsfabut. 'lhus there is a cushion chamber extending about the end of each point of the starac shaped hub member, entirely down one side and partly down the other side of said point, and the ends of the chamber are boundedby a shoulder on the point about which the chamber is locatedv and a shoulder` on the d next adjacent point. The cushion strip is'' preferably made of rubber and it fillsthe chamber, its ends abutting against the shou1- gers which form the end walls of the chamer. Vlocated where the force of the friction member ordinarily will be applied through the cushion to the hub member. A cushion strip extends around each point of the star shaped hub member, down the entire side of the a5 point where the force of the friction member is ordinarily applied, and down the other side of the point aI short distance to insure an ample length of cushion strip to protect the polnt from contact with the casing and 00.

to prevent vibrations and noises from traveling from the friction member to the hub member. Each cushion strip is confined in its chamber and while the material of the l strip may flow under compression it cannot 95 escape from thechamber, the parts being constructed sufficiently snug for this purpose. The cushion is made discontinuous in a plurality of strips which are separated from and are entirely independent of each 100- other. The cushion strips are not subjected to tension at any time during the operation of the driven plate and since they are entirely separate from each other and each is confined in a separate and independent 106 ach of these chambers extends The long side of each cushion stripis so shaped flange,

-ing secured on the viding a plurality conceive to be a preferred construction, but I reserve the right to make any changes in the form, construction and arrangement of parts within the `scope of the following claims:

1-. A driven plate for friction/ clutches, comprising a `star shaped hub member, a friction member, .a casing secured on the friction member and providing a plurality of separate chambers between itself and the hub member, land cushion strips in said chambers interposed between the points of the star shaped hub .member and the casing.

.2. A driven .plate for friction clutches, comprising a hub member having a. star a friction member, a casing secured to the friction member and having a starshaped cavity receiving the hub flange,

there being a chamber about each point of the star shaped flange and all the chambers being separated, and cushion strips in said chambers interposed between the points of' the star shaped fiange and the casing.

3. A vdriven plate. for friction clutches, comprising a star shaped hub member, a casfriction member and proof separate chambers be-v tween itself andfthe hub member, each point of the star shaped hubfmemberhaving lan enlargement on one side providing ends for adjacent chambers, and cushion strips yin y tip said chambers interposed between the points' arate chamber forYeach point of the star'l shaped hubrmember extending around the tip of the point arid down substantially the entire length'of oneside and part way down the other side .of the point, and cushion strips in said chambers interposed betweeny the points of the star shaped hub member and the casing. L

5. A driven plate for .friction clutches, comprising a star shaped hub member, a casing secured on the friction member and providing a plurality of chambers between itself andthe hub member,.ther`e being a separate 'chamber for each point of the star shaped hub membe extending around the of the point and down entire length of one side and part way downD the other side of the point, each point of the star shaped hub member having an enlargement on one side providing ends for ad' ijacent chambers,

and cushion strips in said chambers 'interposedI between the points of the star shaped hub member and the casing;

substantially the p HAROLD V. REED.A 1 

